Thousands of Australian men have joined a viral selfie campaign to promote open conversations about suicide and mental health.

The #ItsOkayToTalk campaign has gathered momentum globally after UK rugby player Luke Ambler posted a selfie that encouraged his friends and teammates to start opening up.

Mr Ambler started the campaign after the sudden death of his brother-in-law.

Thousands of men worldwide have since posted their own selfies featuring an okay hand sign, as well as details of suicide statistics for men.

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